Reaction tube



FIG. 1 is a front, top and right side perspective view of a reaction tube showing our new design;

FIG. 2 is a rear, bottom and left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged front view of a portion taken along line 9-9 in FIG. 3;

FIG. 10 is an enlarged rear view of a portion taken along line 10-10 in FIG. 4;

FIG. 11 is an enlarged left side view of a portion taken along line 11-11 in FIG. 5;

FIG. 12 is an enlarged right side view of a portion taken along line 12-12 in FIG. 6;

FIG. 13 is an enlarged view of FIG. 7;

FIG. 14 is an enlarged view of FIG. 8;

FIG. 15 is an enlarged rear, bottom, and left side perspective view of a portion labeled FIG. 15 in FIG. 2; and,

FIG. 16 is an enlarged bottom view of a portion labeled FIG. 16 in FIG. 8.

The broken lines shown in the drawings represent portions of the reaction tube that form no part of the claimed design. 

CLAIM We claim the ornamental design for a reaction tube, as shown and described. 